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Exploring Algae: Diverse Morphological Forms and Photosynthetic Adaptations

Algae are fascinating Protista that perform photosynthesis as autotrophs. They exhibit diverse morphologies, ranging from single cells and filaments to colonies and thalli. This polyphyletic group includes Green Algae like Pandorina, Chlamydomonas (single cell), Ulothrix (filament up to 100 μm), and Ulva (spherical and sheet forms). Red Algae, such as Polysiphonia (simple thallus) and Porphyra (sheet), as well as Brown Algae and Diatoms, showcase the incredible variety of life in aquatic ecosystems. Notably, Euglena demonstrates unique movements through flagellar and euglenoid motility.

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Exploring Algae: Diverse Morphological Forms and Photosynthetic Adaptations

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  1. “Algae” • Protista that are photosynthetic autotrophs • Diverse morphology • Single cells, filaments, colonies, thalli • Polyphyletic

  2. Green Algae Life size Pandorina - clump Chlamydomonas – 1 cell Ulothrix - filament 100 μm Ulva - sphere Scale bars 10 μm Ulva - sheet ½ Life size

  3. RedAlgae Polysiphonia – simple thallus Porphyra – sheet

  4. Brown Algae

  5. Diatoms

  6. Euglena

  7. Euglenoid movement and Flagellar movement in Euglena Euglenoid movement in Eutreptiella

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